Yarn spool for tube frames



May 31, 1927.

E. F. HATHAWAY ET AL YARN SPOOL FOR TUBE FRAMES Filed March '7, 1923 a na, :5? n I I!!! IV]: all lnrrlfrlllfr, 4": "fl 4 w E- IIIIIIIII VPatented May 31, 1927.

gU rLEQD SPA TEN TrOFI F-iaQEj.

EDGAR ;HATHAWA Y,0F WELLESLEY, AND WALTER BIXBY, OF BOSTON, MASSACHU-SETTS, ASSIGNOBS 'ro-sHAwili m ENGINEERING COMPANY, or BOSTON, MASSACHU-SETTS, A-CORPORATION OF MASSAQHUSETTS.

YARN 5 1 001. r03 ,TUBE F rms. I

i ucationnied March 7, .1923. Serial No. 623,523;

This invention .relates ,totube frames such as are used in weavingAxminster carpets and other similar pilefabrics and is intended toprovide a construction of spool which shallafford means forinterlockinglyengaging the different sections ofa yarnspool in operativerelationship regardless of the order or sequence'in which .the spoolsare arranged, thus mak ng the d fferent spool y.sections interchangeableand revers ble while providing means for rotatably supporting them'forthe transmission of uniform rotation ofone-toitheother.

1 1n the tube frames for wide looms the yarn spools are often made insections or short length individual spools or sections provided withjournals for rota-tably supporting them in bearings, said journalsfrequently being connected by a J tenon f joint or connection, themortise being atone end of ;each individual spool or section and thetenon attheopposite end. V The result of this right and leftarrangementofthe spools is that the sections can be arranged only in yaifixedorder with, let us say, the tenons'p ,alL-onthe right hand endandth e mortises on the left hand end, s o.-..thatthey are not 1interchangeable. The .objject ofthe present yinvention is to, provide asimple, cheap I and durable construction forrotatably supporting thespool. ends in any desired sequence onthe tube. frame while mak ngadequate provision :for inter-locking adjac nt sections together so asto insure transmissioniof uni- :form rotationxfromone to the other asthe yarn is unwound. i

The invention further comprises -a spool constructiona having.concentrically arranged bearing .elements of different :dia meteradapted to fitfcorrespondingly dimensioned hearings of the. end bracketsand of theinter- :medi'ate brackets of multiplle spool tube I of one ofsaid concentric. bearing eleinents.

frames so that, for; the purpose of changing the pattern arrangement,spools may; be re versed or. interchangedwithollt eith r be ing elementinterferingiwiththe; otherwhile, rat the same. t1me,'prov1-s1on,ismadefornterlocking 1 one spool with anotheri intermediate In the"accompanying drawings we have illustrated applications-bf the principleof ordinary tube frame, in which Figure l is a front elevation of acomplete tube frame with intermediate parts "broken out, constructed in:accordance With theprinciples of, this invention. i

this invention to the sectional spool of an -Fi'gure 2 is an endelevation of one of the spools mounted on its supporting tube frame.Figure 3 is a longitudinal central section through .one end ofa-spooland its bearing head. Figure fl is across sectional view of the barrelof sai'd spool. i 7

Figure 5 'is'a vertical longitudinal section through a modified. form ofhead and bearing. q

.Fig'urefi shows another modificationof the spool-supporting bearing incentral se tio gpol ygonalcross section tothefront face of .WlllClliLseries of individual tuft tubes a are secured in any desired manner. Tothe ends of the carrier bar l,-are secur'ed vertical hangers 2, .whoseupper ends "are bent to form offset ,upwardlyl projecting portions 3,

adapted. to. penetrate the links of the carrier .chain, in. which they.are 'held, by, means of j hook, .arms A.

FigureTis a similar viewshowinga modi- The hangers 2 ,beprovide d withany suitable ears or brackets for rotatably supporting the end journalsof the-yarnspool. \In the presentuinstance we.have shown a spoolsupporting ear or bracket 5, struck up ,in tegrallyfrom,one ofthe hangerarms 2, ,while the opposite. endl angerQ, .is provided with a .spring orflexible arm. 6. to support ;-the opposite end ofthesectionalspool.,Both

bearing brackets 5 and ,6. are provided with rfeml ibear e e ements? fl1 e fi Ill disk with a peripheral laterally projecting flange whichforms a female bearing for the reception of the journals of the yarnspool.

The intermediate ends of the spool sections 10 are rotatably supportedin suitable brackets, in this case, said bearing brackets 11 beingpivotally mounted in attaching straps 12, secured to the top of thecarrier-bar to permit them to swing longitudinally of the s,

concentrically arranged lugs or prongs '14,: whlch are preferably struckout of the metal disk by suitable dies and are preferably formed with aperipheral curvature corresponding to the bearing openings in thebrackets 11 in which they are rotatably sup ported. Any desired numberof these arcuate bearing prongs 14 may be used, but it will be observedthat the spaces between the prongs are made of substantially the samecircumferential width as the prongs 6 in order that similar prongs of anadjacent" spool may be inserted into the interstices between the prongsof its interlocking spool.

Now it will be seen that if the prongs on all the spools be made of thesame width with the same intervening spaces, the joun nals willinterlock or intermatch whichever end of one spool is presented toeither end of any other spool. The journal prongs 14, afford sufficientbearing support to operatively support spool sections in the dif ferentbearings of the spool-supporting brackets from which they may be readilyremoved and in whichthey are easily inserted. The more numerous theprongs and interstitial spaces the finer will be the range of adjustmentin assembling the spools. With the four prongs shown in the drawings itwill be possible to adjust each spool relative to its adjacent spool bystages equal to one-quarter of a circumference, while of course doublethe numberof prongs would provide stages of. adjustment equal to oneeighth of a circumference.

Various means of securing the heads of the spool to the barrel may beemployed some of which are illustrated in the drawings. For'example,FigureS shows the end of the tubular barrel 1O provided with atransverse plate 20, formed with integral arcuateflanges'21, throughwhich flanges is passed a diametrical screw 22 for detachably transversekerf or out along the middle line on the fastening stud allows the splitportion of the stud to yield when being forced through the alinedapertures and to spring out into interlocking engagement thereafter. Theattaching stud 23 may also form a journal itself for use on the oldstyle tube frames in which case the prongs 14, afford interlocking meansfor securing uniform rotation of the parts. Generally speaking, however,this particular construction would only be used in cases where it-isdesired to utilize old styles of tube frame having small journalopenings for the reception'of the old style journals, and in such casethe prongs 14, instead of acting as a bearing journal, would form theinterlocking means for securing uniform rotation of the spool sectionsof the tube frame.

In Figure 6 the prongs 14, instead of projecting inside of a femalebearing, project outside of a bearing bushing or ring 30 which isprovided with a central bearing to receive the journal stud 31 carriedby the spool bracket 5. In this form the prongs may have an internalbearing on the ring 30, while the ring has an internal bearing on thestud 31. i

Another modification of interlocking spool I head is shown in Figure 7in which isemployed a springpressed journal member 34, mounted inatubular attaching member 85 and normally pressed outward by a helicalspring 36. This form also is intended for use in old stylespool-supporting brackets while providing the novel locking means forsecuring uniform rotation of the spool sections. 7 1 s As the prongs 14are pressed up out of sheet metal, usually sheet steel, the dies may begiven such design as to leave the-prongs very slightly flared asshown-in Figure 9, so asto make a spring friction'engagement with theinsideof the flange bearing members 7 to give a retarding. or brakingaction to produce a tension on the yarn instead of employing a separatespool brake.

In Figure 1 is shownv a: spool brake comprising a frictional pad 40mounted on .a reversely bent spring arm 41, whose lower or foot member42 is secured to the top of the carrier bar. This arrangement givesample flexibility and adjustment is provided as shown in Figure 8 byattaching the foot 42 of the spring brake adjustably to the carrier barby means of screw and slot engagement. It will also be seen that owingto the symmetrical and similar arrangement of connecting means at eachend-of the individual spools each spool is reversible enclwise in theframe so that either end may be presented to the right or to'the left-QMoreover, the construction shown and described affords a' simple meansfor rigidly securing the end heads to the barrel by a detachableconnection permitting the substitution of new heads or new barrels byeffecting material economy in service. The supporting of one of theouter end bearing brackets of the spool on a spring or flexible memberfacilitates the easy assembling or disassembling of the spool sectionsin the frame.

hat we claim is:

1. In a tube frame for weaving, thecombination of a longitudinal carrierbar, suspension hangers and a yarn-spool rotatably supported thereby, abrake member compris ing a resilient angle arm havingahorizontal limbsecured to the carrier bar to permit adright limb arranged to pressagainst the outer face of an end head of the spool, substantially asdescribed.

2. In a tube frame, the combination with a carrier bar and itssuspension means, of a yarn spool rotatably supported thereby, a brakemember comprising a reversely bent spring arm arranged to press againstthe outside face ofa spool head and adjustable longitudinally of thecarrier bar, to vary its retarding action on the spool, substantially asdescribed. V

3. In a tube frame, the combination of a carrier-bar and its suspensionmeans, bearing brackets for rotatably supporting a. yarnspool, ayarn-carrying spool provided with resilient journal members disposed torotate in said bearing brackets, said journal members normally acting toexert friction through their expansion against the co-operating bearingsto retard rotation of the spool. substantially as described.

4. A yarn-spool for both single and multiple spool tube-frames embracinga barrel, two concentric bearing elements of different diameters locatedat one end thereof to fit, respectively, spool-bearing brackets havingbearings of corresponding diameter, .one of said bearing elements beingadapted to form ustment longitudinally thereof and an upings of theintermediate'brackets being substantially larger than those of the end 7brackets, a yarn-spool provided with supporting bearing elements ofdifferent diameters concentrically arranged, the inner hearing elementbeing dimensioned to co-act with the end bearing bracket of the tubeframe and the larger bearing element being dimensioned to fit theintermediate bearing bracket, thereby permitting the reversal orshifting of the spool in the tube-frame.

6. In a tube-frame for tuft weaving, the combination with a carrier-barhaving spoolsupporting end brackets and'one or more intermediatebrackets for rotatably supporting a series of aligned yarn-spools, theend brackets having relatively small bearings and the intermediatebrackets having larger bearings, yarn-carrying spools having bearingelements dimensioned to fit the large bearings, said spools also havingconcentrically located bearing elements adapted to fit the smallbearings of the end brackets, the outer bearing elements of the spoolscomprising spaced prongs concentrically arranged around the innerbearing element to provide means for interlocking two adjacent spoolends together.

. 7. In a tube-frame, the combination with a longitudinal carrier-barhaving upwardly extending intermediate and end spool-supporting bracketsprovided with coaxial bearings for rotatably supporting a yarn-spool, a

sectional yarn spool comprising a plurality. of rotatable spoolsections, each section be-

